Resilient tire.



H. M., T. J., W. J. & H. N. DEETH.

RESILIBNT TIRE. APPLIoATIoN FILED Num.

Patented Feb. 7, 1911.

3 SHEETS-SHEET 1.

INVENTURS:

TH: Nomzls runs co., wAsHmanm. n. c,

. J. & H. N. DEETH.

H. M., T. J., W

RESILIENT TIRE. APPLICATION FILED IEB.5, 1910.

Patented Feb. 7, 1911.

3 SHEETS-SHEET 2.

THF Nokms rsrsfzs co., wAsHmcmN. u. u.

H. M., T. J., W. J. & H. N. DEETH. REsILIBN-T TIRE.

APPLICATION FILED IEB.5, 1910.

983,270. Patented Feb. 7, 1911.V

3 SHEETS-SHEET 3.

rsns co., wAsHmaTcN. D. cv

"rEn s'rnrEs @arENr oEEiOE HERBERT IVI. DEETH, THOMAS JOI-IN DEETH, WILLIAIVI JAS. DEETI-I, AND HARVEY NELSON DEETH, OF TORONTO7 ONTARIO, CANADA.

RESILIENT TIRE.

Specification of Letters Patent.

Patented Feb. *7, 1911.

Application led February 5, 1910. Serial No. 542,209.

To all whom it may concern:

Be it known that we, HEnBER'r MILTON DEE'rI-I, THOMAS JOHN DEETII, VILLIAM JAMES DEETH, and HARVEY NELsOX DEE'rI-r7 all of the city of Toronto7 Province of Ontario, Canada, have invented certain new and useful Improvements in Resilient Tires; and we hereby declare that the following is a full, clear, and exact description of the same.

This invention relates to a resilient tire consisting of a flexible shoe expanded into circular form by resilient expanding means which can be tensioned to the load the wheel will be required to carry, the expanding means being constructed of articulatingly connected sections flexibly suspended between their articulating supports and capable of acting separately and in unison with each other when yielding to the impact on the tire and restoring` it to its normal shape.

For an understanding of the invention reference is to be had to the following` description and to the accompanying drawings in which:

Figure l, is a section of part of the tire. Fig. 2, is a section taken at right angles to Fig. l. Fig. 3, is a perspective view of a section of the rim. Fig. 1i, is a perspective view of one of the rocker segments of the Outer tire member. Fig. 5, is a perspective view of one of the links of the outer tire member. Fig. 6, is a perspective view of one of the arched supporting .segments and one of the levers of the inner tire member. Fig. 7, is a perspective view of one of the links and tension springs of the inner tire member. and7 Fig. 8, is a perspective view of one of the rocker segments of the inner tire member.

Like characters of reference refer to like parts throughout the specification and drawings.

1When the rim a is of a channel shape it is preferable to make it of two circumferentially separable rim sections a a of which the rim section a is permanently connected to the felly `7), and the rim section a is securely but removably connected to the rim section a so that it can be laterally removed from and lreplaced on the felly to permit of the tire being placed in and removed from the channel of the rim.

A convenient means of separably securing the rim to the wheel is to bolt or rivet the rim section a to the felly and to provide the felly and rim section a with stationary nuts c having on the outer side of the rim. section a, shoulders c with iiattened faces, and to form'the rim section a with bayonet joint slots c to receive the nuts c, the shoulders c being of a sufficient size to overlap the edges of the slots and prevent the radial separation ofthe rim section a. from the rim sect-ion a, the edges of the bayonet joint slots preventing the lateral movement of the rim section a when the nuts engage with the inner ends of the slots. The edges a3 of the rim a are bent outward to form external channels ai' for the tire cover (Z which is clamped in the channels by locking rings c.

The form or construction of the rim may lbe varied and modified within the scope of the appended claims without departing from the principle of the invention as any other form or construction of rim suitable for the purpose may be substituted for that shown and described.

Adjustable through the stationary nuts c are tension screws f regulating the resiliency of the tire by varying its expansion from the rim. The tension screws f are provided with caps g having rocker'bars g extending partly across the channel of the rim "transversely to the circle of the wheel and mounted on the rocker bars g are rocker segments g which form the articulating supports holding the expanding means in flexible suspension. The expanding means consists of a flexible outer tire member and a flexible inner tire member each consisting of a sufficient number of articulatingly connected liexible sections to encircle the rim a. Each section of the inner tire member consists of an arched supporting segment g5, to one arm of which is fulcrumed a tensioning lever g, a link g flexibly connecting the other arm Z2 of the arched supporting segment with a rocker segment g on one side, and a link gi flexibly connecting the short arm ot the tensioning lever with a rocker segment g on the other side, of the arched supporting segment, the link g3 being provided with a spring engaging the tensioning level' and short level' arln g9 to which the link g* is pivotally connected. By thus arranging the arlns of the tensioning lever, the strain on the tensioning spring is reduced in the ratio of the lengths of the respective arlns of the lever to each other which is of considerable importance in avoiding' breakage ot' the palts.

As shown in Fig. l, the fulcrums glo for the levers g are located neal' the lower edge of the levers, and the pivotal collnections g11 for the links g* are near the top edge of the levers so that during the flexion of the parts the length of the inner tire member section between the articulating supports will be greater than when the parts are in their norlnal distended condition, thus minimizing the risk of breaking the parts when yielding to the impact on the tire. lVhen the tire is subjected to impact the tire lnelnber l section in line with the place of impact yields and transmits through its articulating supports a strain to the adjacentsections, and then to the succeeding sections ulltil the torce of impact is expended, ill this way enabling the parts to yield independently and collectively to cushion t-he jar resulting from such impact.

The outer tire member consists of the lillks /L and rocker segments it. rockably mounted onthe arched supporting segments f/5 forming the articulating supports for the outer tire member.

- to the tire an active resiliency equal to pneumatie action. Thus wllen the Wheel is traveling on a smooth surface the flexion ot' the parts of the tire members is almost impel'- ceptible, sutlicient only to cushion the vibration, but when the wheel nleets an obstacle in its path, the impact of the contact causes the flexion of the links and rocker segments, ot the outer tire member, adjacent. to the line of ilnpact. The force et theimpaet is then transmitted by the l'ocker segment 71. to its respective arched supporting segn'lent (f" causillg the inward radial movement of the latter and the flexion of the links (/3 g4. The flexion of the links gf' g is resisted by the spring g? bearing against the level' y and the strain is transmitted by the links g3 g* to the adjacentl rockel' segments g and by them in.succession to the remaining sections ot' the inner tire member in gradually diminishing force to a` point dianietrically opposite the place of impact, the remaining springs g7 and levers g oil'ering l'esistance to the strain caused by the impact and assisting in l'estol'ing the parts to their normal position when the stl'ain is relieved. By this means the shock resulting from the impact is gradually and quickly absorbed by each individual pal't of the til'e owing to the flexible character of its construction, and. the resiliency of the tire is maintained by the tensioning means consisting of the levers g and springs gl operating to maintain the parts in, and restore them to, their circular condition.

Having thus fully described our invention what we clailn as new and dcsil'c to secure by Letters Patent is:

l. rIhe hereinbefore described device consisting of an inner til'e member comprising arched support-ing segments, tensioned levers fulcrnmed Vto the arched supporting segments, l'oeker segments, links connecting the rocker segments to the arched supporting seglnents and to the levers, and supporting means for the rockel' segments. and all outer til'e member comprising lexibly connected segments yieldingly held by the arched supporting segments.

2. rlhe hereinbet'ore described device consisting of an innel' tire member comprising arched supporting segments, tensioned levers fulcrumed to the al'ched supporting segments, rockel' segments, links connecting the rocker segments to the arched supporting segments and to the levers, and supporting means for the rockel' segments, and an outer til'e member colnprising rockersegments art-iculatingly held by the arched supporting segments, and links connecting the rocker segments.

3. The hereinbefore described device consisting of an ilmel' tire member comprising arched supporting segments, tensioned levers fulcrumed to the arched supporting segments, rocker segments, links connecting the l'ocker segments to the arched supporting segments and to the levers, rocker bars for. the rocker segments, and adjusting screws for the rocker bars, and an outer tire mem- CII ber comprising flexibly connected segments yieldingly held by the arched supporting segments.

4f. The hereinbefore described device consisting or an inner tire member comprising arched supporting segments, tensioned levers fulcrumed to the arched supporting segments, rocker segments, links connecting the rocker segments to the arched supporting segments and to the levers, rocker bars for the rocker segments7 and adjusting screws i501' the rocker bars, and anV outer tire member comprising rocker segments articulatingly held by the arched supporting segments and links connecting the rocker segle ments.

Toronto, January 15th, 1910.

HERBERT M. DEETH. THOMAS JOHN DEETH. WILLIAM JAS. DEETH. HARVEY NELSON DEETH.

Signed in the presence of- C. H. RIoHEs, H. C. TRIMBLE. 

